climate control help
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 38
Likes: 1
From: ontario ny.
climate control help
I have been having intermittent problems with my climate control on my 90. Now it reads no codes the display just shows --- all the time and the fan is on full speed. I just removed it cleaned all the contacts reinstalled and no difference. Any help would be appreciated... Jim S.
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
The BCM is usually the source of all C-68 control function problems. They run $75 for the cheapo Chinese clones or as much as $125 for GM stock.
Get your FSM and read the flow chart to diagnose BCM failures.
For a measly $100 its nice having all the diagnostic proceedures right there in print, isn't it?
Get your FSM and read the flow chart to diagnose BCM failures.
For a measly $100 its nice having all the diagnostic proceedures right there in print, isn't it?
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
There was a thread on this problem a while back but I couldn't find it. There was a picture of the control head showing the dashes on the display. I did find this:
http://forums.corvetteforum.com/1579101537-post5.html
http://forums.corvetteforum.com/1579101537-post5.html
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 38
Likes: 1
From: ontario ny.
There was a thread on this problem a while back but I couldn't find it. There was a picture of the control head showing the dashes on the display. I did find this:
http://forums.corvetteforum.com/1579101537-post5.html
http://forums.corvetteforum.com/1579101537-post5.html
Instructor
Joined: Feb 2008
Posts: 177
Likes: 5
From: Toronto Ontario
There are 2 fuses that are involved with the climate control/blower circuit....the CTSY 15amp and the AC Fuse 25 amp...are they OK. Also Ground 201 is involved with both circuits...is it Ok??
Also with the climate control feature if any codes have been detected you have to remove the CTSY fuse or disconnect the battery to reset the system.
Also with the climate control feature if any codes have been detected you have to remove the CTSY fuse or disconnect the battery to reset the system.
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 38
Likes: 1
From: ontario ny.
There are 2 fuses that are involved with the climate control/blower circuit....the CTSY 15amp and the AC Fuse 25 amp...are they OK. Also Ground 201 is involved with both circuits...is it Ok??
Also with the climate control feature if any codes have been detected you have to remove the CTSY fuse or disconnect the battery to reset the system.
Also with the climate control feature if any codes have been detected you have to remove the CTSY fuse or disconnect the battery to reset the system.
Instructor
Joined: Feb 2008
Posts: 177
Likes: 5
From: Toronto Ontario
Ground 201 is located below the LH side of the instrument panel, on the kick plate. I mentioned the fuses and ground just to make sure that the simple things have been eliminated.
I suspect however that the A/C programmer has failed. According to the FSM if you get 3 dashes on the control head that's an indication of programmer failure.
I suspect however that the A/C programmer has failed. According to the FSM if you get 3 dashes on the control head that's an indication of programmer failure.
